My daughter plays fastpitch softball, this is her last summer in the league, she is turning 19 this summer.

She's always had outstanding coaches and the parents have all for the most part been good, too. You get a random one once in a while who will scream at their daughter and make a complete ass out of themselves and their kids, it's pretty infuriating and ridiculous. Mostly when she was pre-teen and younger, that age group. By now, the ones who really love it and want to be there are playing and not being forced by the parents anymore.

The difference between coaches on grass/normal ground and ice hockey coaches?

The ice hockey coaches can avoid the wrath and beatdowns they deserve if they do shit like this. I guarantee you that if he did this to a kid on a football/rugby/hockey/basketball area, he'd get knocked the fuck out.